Concept
The Winship Standard
Burdens of proof and persuasion
The Winship Standard
The constitutional rule comes from In re Winship, which held that the Due Process Clause requires the prosecution to prove every element of a criminal offense beyond a reasonable doubt in all criminal cases, including juvenile delinquency proceedings based on criminal acts.1 The Court gave the holding in explicit terms: the Due Process Clause "protects the accused against conviction except upon proof beyond a reasonable doubt of every fact necessary to constitute the crime with which he is charged."2 Two phrases in that sentence carry the rule. The words "every fact necessary to constitute the crime" fix what must be proved to the demanding standard, a subject that later sections develop as the elements of the offense. The words "the accused" fix who receives the protection, and that status follows from the proceeding resting on criminal conduct, whatever name the legislature attaches to it.
The facts of Winship show the second phrase at work. The proceeding there was a juvenile delinquency adjudication, and the factfinder applied a preponderance standard because the proceeding carried a civil label, even though the underlying act was one that would have been larceny if an adult had committed it. The Court held that proof beyond a reasonable doubt was required, because the adjudication rested on criminal acts and put at stake the interests the standard exists to protect.3 Students lose this point when they treat a civil label on a proceeding as controlling, since the question is what the proceeding adjudicates.
The standard that Winship constitutionalized had a long history behind it. The demand for a higher degree of persuasion in criminal cases was voiced from ancient times, the formula of proof beyond a reasonable doubt crystallized in 1798, and common-law jurisdictions came to accept it as the measure by which the prosecution must convince the factfinder of every essential element of guilt.4 The Supreme Court's own opinions had long proceeded as though the Constitution required it. In Davis v. United States, decided in 1895, a murder conviction was reversed because the trial judge told the jury to convict when the evidence on the defendant's sanity was equally balanced, and the Court explained that no one should lose life under the forms of law unless jurors can say on their consciences that the evidence shows every fact necessary to the crime beyond a reasonable doubt.5 Winship acknowledged that even near-unanimous adherence among common-law jurisdictions might not by itself establish a due process requirement, although that adherence reflected a profound judgment about how justice should be administered.6 The Court therefore stated its holding in terms meant to remove any remaining doubt about the standard's constitutional stature.7 Later, in Apprendi v. New Jersey, the Court repeated this history and described the right to a verdict resting on proof beyond a reasonable doubt as the companion of the right to trial by jury.8
The reasons the Court gave fall into three groups, each answering a different question about why a criminal case demands more than a civil one. The first concerns who bears the risk of mistake. Every trial carries a margin of error, and the standard of proof decides on which side of the dispute the mistakes tend to fall. In a civil suit, where the plaintiff need only show that a claim is more probable than not, a mistaken judgment for the plaintiff is no worse than a mistaken judgment for the defendant, so spreading the risk about evenly makes sense.9 The criminal defendant has liberty at stake and faces the certainty of stigma upon conviction, which is why the margin of error is reduced by placing on the prosecution the burden of persuading the factfinder of guilt beyond a reasonable doubt.10 Justice Harlan, concurring, conceded that this raises the chance that a guilty person goes free, and defended the cost as a social value judgment that it is "far worse to convict an innocent man than to let a guilty man go free."11 The standard thus lowers one kind of mistake, convicting the innocent, and accepts more of the other.12
The second reason concerns the factfinder's state of mind. The standard presses jurors to reach a firm subjective certainty about the facts in issue before they convict, which a looser test of probability would never demand.13 The third concerns public confidence. A standard that left people unsure whether innocent persons were being condemned would dilute the moral force of the criminal law, and the demanding standard assures every individual that the government cannot adjudge guilt without convincing a proper factfinder with utmost certainty.14
These reasons make the contrast with civil litigation easy to state. An accused who could be adjudged guilty and imprisoned on the evidence that would suffice in a civil case would suffer a disadvantage amounting to a lack of fundamental fairness, and Winship adopted that view.15 Federal securities enforcement shows the difference on a single body of conduct. The Securities Act and the Exchange Act ground civil and criminal actions on the same violations, but the criminal action adds a willfulness or knowledge requirement and demands proof beyond a reasonable doubt, where the civil action requires only a preponderance.16
The preponderance standard fits the rent case for the reasons already given: a mistaken judgment for either side costs money, and neither side faces confinement or criminal stigma. The juvenile in Winship stands on the other side of the line, because the adjudication there rested on conduct that would be a crime if an adult had committed it.
The reasonable-doubt standard also gives concrete substance to the presumption of innocence, the principle the Court described as bedrock to the administration of the criminal law.17 The presumption of innocence is not a presumption in the usual sense, where proof of one fact lets the factfinder assume another. It is a forceful way of saying that the prosecution must prove guilt beyond a reasonable doubt and that no inference may be drawn against the defendant from arrest, indictment, or presence in the courtroom as a defendant.18 In practical terms the accused has nothing to prove, and the whole task of persuasion rests on the prosecution.19
The Model Penal Code states the same rule by statute. Section 1.12 provides that no person may be convicted of an offense unless each element of the offense is proved beyond a reasonable doubt, and that in the absence of such proof the innocence of the defendant is assumed.20 The second sentence presents the presumption of innocence as a consequence of the burden: where proof is missing, assumed innocence is what remains. The Code is a model that governs only in a state that enacts it, while Winship binds every state as a matter of due process. The next section turns from the existence of the standard to what it requires of a jury.